Laravel 5.5：如何定义可以在所有控制器中使用的全局变量？
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Laravel 5.5 : How to define global variable that can be used in all controllers ?
提问by Saurabh Mistry
Hello Developers & Coders ,
你好开发人员和编码人员，
My question is How to define a global variable , that can be used in all controllers in Laravel ?
我的问题是如何定义一个全局变量，可以在 Laravel 的所有控制器中使用？
I have defined one variable $companyin AppServiceProviders's boot method- that im using in all blade views , but I can not use it in controllers file , it gives error , undefined variable $company
我$company在AppServiceProviders 的启动方法中定义了一个变量- 我在所有刀片视图中使用它，但我不能在控制器文件中使用它，它给出了错误，undefined variable $company
class AppServiceProvider extends ServiceProvider
{
/**
* Bootstrap any application services.
*
* @return void
*/
public function boot()
{
View::share('key', 'value');
Schema::defaultStringLength(191);
$company=DB::table('company')->where('id',1)->first();
View::share('company',$company);
}
/**
* Register any application services.
*
* @return void
*/
public function register()
{
//
}
}
please guide me , thanks for your efforts & time :)
请指导我，感谢您的努力和时间:)
回答by kenken9999
set configuration variables at runtime
在运行时设置配置变量
class AppServiceProvider extends ServiceProvider
{
/**
* Bootstrap any application services.
*
* @return void
*/
public function boot()
{
View::share('key', 'value');
Schema::defaultStringLength(191);
$company=DB::table('company')->where('id',1)->first();
// View::share('company',$company);
config(['yourconfig.company' => $company]);
}
}
usage:
用法：
config('yourconfig.company');
回答by Kuba Bia?y
Okay, so unless you want to keep it in your Session, which I absolutely do not recommend, Cache which does not seem to be a best idea either or set it through the Config system inside of a Framework (which already are 3 different solutions suited for different matters) I would start from thinking what that variable will contain, if that's something that's just a Collection of Company model then you can basically use it in any controller by just using Laravel Eloquent methods.
好的，除非你想把它保留在你的会话中，我绝对不推荐，缓存这似乎也不是一个最好的主意，或者通过框架内的配置系统设置它（已经有 3 种不同的解决方案适合对于不同的问题）我会从考虑该变量将包含什么开始，如果这只是公司模型的集合，那么您基本上可以通过使用 Laravel Eloquent 方法在任何控制器中使用它。
What I recommend is either $company = Company::where('foo', 'bar')->first();, or just some data provider that would return all the information that you need in the form of Laravel Collection.
我推荐的是$company = Company::where('foo', 'bar')->first();，或者只是一些数据提供者，它会以 Laravel 集合的形式返回您需要的所有信息。
tl;dr
tl;博士
#recommended way that's reusable throughout whole app
Company::find(1); // instead of DB::table('company')->where('id', 1)->get();
Hope that helps.
希望有帮助。
